MRBF Surface Mount Fuse Block - Common Source - MRBF Surface Mount Fuse Block - Common Source

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Blue Sea Systems

5196-BSS

MRBF surface-mount common-source fuse block

The BLUE SEA SYSTEMS MRBF Surface Mount Common Source 5196-BSS fuse block provides centralized protection for three high-current circuits, such as a windlass or bow thruster, from a common source. Measuring 189.4 x 50.8 x 61.1 mm, it optimizes onboard space. This product includes only the fuse block, without MRBF fuses or mounting screws.

Price excl. import taxesBenefit from the professional rate

$64.00 USD

$64.00 USD ~~$74.00 USD~~

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Prices exclude import taxes. DAP delivery: import taxes are paid on delivery.

Available in stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Fuse type	MRBF (Mega/MIDI)
Amperage	300.0
Compatible fuse rating range	30-300 A
Number of fuses	3.0
Mounting type	Surface mount
Stud size (mm)	8
Terminal thread size (mm)	8
Cover included	Oui
Ignition protection	Oui
ABYC compliance	Oui
Contact material	Tinned copper
Recommended terminal torque (Nm)	11.3
Dimensions (W x H x D)	189.4 x 50.8 x 61.1
Certifications	SAE J1171,ABYC,USCG
Product barcode	SK-000048303
Dimensions (L x W x H)	189.4 x 50.8 x 61.1
Manufacturer part number	5196B-BSS
Horizontal mounting hole spacing	164.0
Vertical mounting hole spacing	9.5
Number of mounting screws	4
Mounting screw size (metric)	5
Product type	Fuse block
Product weight	0.25
Number of studs	4

Detailed description

Designed for high-current circuit protection, the BLUE SEA SYSTEMS MRBF Surface Mount Common Source 5196-BSS fuse block provides a compact solution for grouping multiple critical loads. This module centralizes protection for three separate circuits, such as a windlass, bow thruster, or main power feed to a dashboard, from a single power source. Its surface-mount design simplifies integration into confined onboard spaces.

Integration and Technical Specifications

The MRBF 5196-BSS block is sized to accept MRBF fuses (Mega/MIDI-style bolt-down fuses), known for handling high currents in a compact format. With dimensions of 189.4 mm in length, 50.8 mm in width, and 61.1 mm in height, it has a controlled footprint. Connections are made via four 5/16"-18 studs, and the unit is securely mounted using four #10 or 5 mm mounting screw holes.

Positioning and Use Cases

This fuse block serves as an alternative to individual fuse holders for applications requiring protection of 2 to 3 high-current loads near the battery. Unlike more complex distribution solutions, the 5196-BSS simplifies primary wiring by providing a robust common connection point, reducing the number of direct battery cables. It is particularly suited to installations where space is limited and connection reliability is critical for equipment such as bow thrusters or windlasses.

Documentation

Type	Nom
	EN - Wiring Schematic - MRBF Surface Mount Fuse Block - Common Source
	EN - Dimensioned Drawing - MRBF Surface Mount Fuse Block - Common Source

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the MRBF fuse block for high-current circuits »

The BLUE SEA SYSTEMS MRBF Surface Mount Common Source fuse block, model 5196-BSS, is a relevant engineering solution for managing high-consumption circuits aboard. Its "common source" design simplifies the electrical architecture by providing a single connection point for the main power supply, which then distributes to three separate circuits via MRBF fuses. This approach reduces the complexity of direct wiring from the battery and minimizes failure risks associated with multiple connections.

This type of fuse block is ideal for medium-sized recreational or work vessels requiring reliable protection for high-power equipment such as windlasses, bow thrusters, or the main power supply of an inverter or secondary distribution panel. Its compact format and surface-mount design make it easy to integrate into engine compartments or technical lockers where space is often limited. Installation requires careful attention to cable sizing for the common input and individual outputs to match the ratings of the MRBF fuses used, which are not included. It is crucial to ensure the installation environment is dry and protected from direct spray, although BLUE SEA products are designed for marine environments. This model is not suitable for distributing low-current circuits or installations requiring more than three centralized MRBF protections.

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MRBF surface-mount common-source fuse block

$64.00 USD

$64.00 USD ~~$74.00 USD~~

Frequently Asked Questions

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What is the purpose of the MRBF Surface Mount Common Source 5196-BSS fuse block?

The BLUE SEA SYSTEMS MRBF Surface Mount Common Source 5196-BSS fuse block is designed to protect up to three high-current electrical circuits from a common power source. It centralizes protection for critical loads such as a windlass, bow thruster, or main dashboard power supply, simplifying wiring and reducing the number of direct battery connections.

Which types of fuses are compatible with this fuse block?

This fuse block is specifically designed to accommodate MRBF (Mega/MIDI-style Bolt Down Fuse) type fuses. These fuses are known for their ability to handle high currents in a compact format, ensuring effective protection of circuits.

How many separate circuits can this fuse block protect?

The MRBF Surface Mount Common Source 5196-BSS fuse block can protect up to three separate circuits from a single power source. It is ideal for consolidating protection for multiple high-power devices.

How is the 5196-BSS fuse block mounted on a surface?

The 5196-BSS fuse block is designed for surface mounting. It is securely fastened using four mounting screw holes. These holes are compatible with #10 screws or 5 mm screws.

What are the exact dimensions of the 5196-BSS fuse block?

The dimensions of the 5196-BSS fuse block are as follows:

Length: 189.4 mm (7.46 in)Width: 50.8 mm (2.00 in)Height: 61.1 mm (2.40 in)These compact dimensions make it easy to install in confined spaces on board.

What types of electrical connections are used on this fuse block?

The electrical connection for the 5196-BSS fuse block is made via four 5/16"-18 studs. These robust studs ensure a reliable connection for high-current circuits.

For which marine applications is this fuse block best suited?

This fuse block is particularly suitable for protecting 2 to 3 high-current loads near the battery. It is ideal for equipment such as windlasses, bow or stern thrusters, and the main power supply of a dashboard, where reliable connections and high-current management are critical.

What is the main advantage of using a common-source fuse block like the 5196-BSS?

The main advantage is the simplification of primary wiring and the reduction in the number of direct cables to the battery. By providing a robust common connection point for multiple circuits, it allows for a cleaner and more organized installation, while ensuring centralized and reliable protection for high-power equipment.